Date of Award


Degree Type

Bachelors Thesis

Degree Name

Bachelor of Science in Geological Engineering



First Advisor

Dr. Eugene S. Perry


Intrusions of granitic rocks on a large scale are commonly found in the central part of folded mountain systems. Igneous rocks, intrusive and extrusive, are widespread in the mountains of southwestern Montana. An examination of the structural pattern of this area indicates that the fold trends form a radial pattern. How and why this pattern formed and its relation to the igneous activity in the area have not yet been discussed in the literature.